## NCERT Class 6 Mathematics Eleventh Chapter Algebra Exercise 11.3 Solution

## EXERCISE 11.3

**(1) Make up as many expressions with numbers (no variables) as you can from three numbers 5, 7 and 8. Every number should be used not more than once. Use only addition, subtraction and multiplication. **

**(2) Which out of the following are expressions with numbers only? **

Ans: (c) 5 (21 – 7) + 7 × 2 and (d) 5

**(3) Identify the operations (addition, subtraction, division, multiplication) in forming the following expressions and tell how the expressions have been formed. **

(a) z +1, z – 1, y + 17, y – 17

Ans: Addition, subtraction, addition, subtraction

Ans: multiplication, division, multiplication

(c) 2y + 17, 2y – 17

Ans: Addition, subtraction

(d) 7 m, – 7 m + 3, – 7 m – 3

**(4) Give expressions for the following cases. **

(a) 7 added to p

Ans: p + 7

(b) 7 subtracted from p

Ans: p – 7

(c) p multiplied by 7

Ans: p × 7 = 7p

(d) p divided by 7

Ans:

(e) 7 subtracted from – m

Ans: (- m) – 7

(f) – p multiplied by 5

Ans: (- p) × 5 = – 5p

(g) – p divided by 5

(h) p multiplied by – 5

Ans: p × (- 5) = – 5p

**In case you are missed :- Previous Chapter Exercise Solution**

**(5) Give expressions in the following cases. **

(a) 11 added to 2m

Ans: 2m + 11

(b) 11 subtracted from 2m

Ans: 2m – 11

(c) 5 times y to which 3 is added

Ans: 5y + 3

(d) 5 times y from which 3 is subtracted

Ans: 5y – 3

(e) y is multiplied by – 8

Ans: – 8y

(f) y is multiplied by – 8 and then 5 is added to the result

Ans: (- 8y) + 5

(g) y is multiplied by 5 and the result is subtracted from 16

Ans: 16 – 5y

(h) y is multiplied by – 5 and the result is added to 16.

Ans: (- 5y) + 16

**(6) (a) Form expressions using t and 4. Use not more than one number operation. Every expression must have t in it.**

**(b) Form expressions using y, 2 and 7. Every expression must have y in it. Use only two number operations. These should be different.**

**In case you are missed :- Next Chapter Exercise Solution**